Tesla Certified Installer

Tesla Powerwall 3, Installed by a Master Electrician

Whole-home battery backup that stores solar energy and keeps your home running through outages. Every Powerwall comes standard with Tesla Home, Tesla's AI-powered home energy management system. Kelvin Watson is Tesla-trained and certified to install the latest Powerwall 3, including expansion units, across the Phoenix Valley.

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Tesla Powerwall mounted on an exterior wall at dusk
Tesla Powerwall 3
Certified installer
Licensed
AZ & TX Master
5.0 Stars
Across platforms
26+ Years
Experience
Installed by Sand and Sun

Our Tesla Installations

From Powerwall 3 and expansion units to Tesla Wall Connectors, Universal Chargers and Gateways. When you hire Sand and Sun, you're working directly with the master electrician who owns the business.

Close-up of a Tesla Wall Connector with its status light on and the charging cable coiled
Wall Connector · Close-up
Tesla Wall Connector installed on a pedestal mount at a commercial site
Wall Connector · Pedestal
Tesla Universal Wall Connector on a garage wall beside a parked Tesla, with its box on the floor
Universal Wall Connector · Garage
Tesla Wall Connector mounted on an exterior wall next to the electric meter and disconnect
Wall Connector · Exterior Wall
Tesla Wall Connector installed on a residential garage wall
Wall Connector · Garage
Tesla Wall Connector installed beside a garage door track
Wall Connector · Garage
Tesla Wall Connector mounted on a block wall
Wall Connector · Block Wall
Newly installed Tesla Wall Connector in a garage with its Tesla box on the floor
Wall Connector · New Install
Tesla Wall Connector installed on a home garage wall
Wall Connector · Home Garage
Tesla Powerwall 3 & expansion units
Tesla Wall Connectors & Universal Chargers
Tesla Gateways
Panel upgrades & dedicated circuits
Tesla Powerwall 3 Certified
AZ & TX Master Electrician
AZ ROC #343455
BBB Accredited · A+
Tesla Customers Say

Straight From the Driveway

"We hired Kelvin to install a Tesla charging port based on a rave review from my sister. He exceeded all of our expectations — he is beyond professional — smart, polite, fair and a problem solver. He made sure that his work site was pristine and that we understood how to use our equipment before leaving. Outstanding service in every way! I would hire Sand and Sun Electrical again for any household project."

— Shannon Dowdall · Verified · Jul 2026

"Kelvin was professional and responsive to my inquiry and showed up as promised. He assessed my Tesla charger install situation and recommended a less expensive solution than another contractor. Job done professionally and quickly. I have used Sand & Sun on two others job with 100% satisfaction."

— Lee T. · Local Guide · Verified · Jul 2026
Comes Standard in Every Powerwall

What Is Tesla Home?

Tesla Home is the home energy management system that comes standard in every Powerwall. It's powered by Opticaster, Tesla's AI optimization software, which predicts your energy needs, automatically adjusts your usage across your electric appliances and can help lower your electricity bills. Opticaster decides where to source your energy from and how to use it in your home.

  • Predicts your energy needs
  • Helps lower your electricity bills
  • Improves over time
Tesla Opticaster AI optimization cycle graphic
Automatic Energy Management

How Tesla Home Works for You

Once your Powerwall is installed, you set the goal and Tesla Home does the rest.

Set Your Goal

Use the Tesla app to choose your energy goal to prioritize savings or solar self-consumption. You can also adjust your Backup Reserve to control how much of your stored energy will be saved for outages.

Maximize Your Savings

Opticaster can help you save more by analyzing your energy usage, solar production and local utility prices. Then it decides how and when to use your energy.

Monitor Your System

See what your system is doing throughout the day and adjust your preferences at any time.

The Tesla App

Monitor Everything. Control It All.

Review your home energy usage and control how your home uses energy, all from the Tesla app.

Home Status

Check in on what your system is doing, see what you can expect it to do next and understand why it's doing it.

Home Controls

Monitor your connected devices, like smart breakers and EV chargers, and adjust your system settings.

Energy Insights

Review real-time and historical energy insights and view trends to learn more about your home's energy usage.

Charge on Solar

Use the excess solar energy your system generates to charge your electric vehicle during the day.

Low-Cost Charging

Set your EV to charge automatically when utility prices are low or excess solar energy is available. Tesla Home supports a variety of rate plans.

Tesla Home app showing solar panels, Powerwall, Model 3 and grid power flow for a home
Modern home at night with rooftop solar, two Powerwall units and an electric vehicle in the carport

Product images courtesy of Tesla

Common Questions

Powerwall & Tesla Charging FAQ

Yes — the Powerwall 3 is generally compatible with most existing solar installations through AC coupling. It works with major inverter brands including SolarEdge, Enphase, SMA, Fronius, and others certified to UL 1741. I’ll evaluate your current setup to make sure everything integrates properly and recommend the right configuration for your home.

1000%! I recommend 3 expansion units — that way you’re safe from a power outage for a couple of days. But definitely at least 1!

No, we do not purchase the SPAN panel, Powerwall 3, or the EV chargers. This is the client’s responsibility. We handle all the installation work.

If we’re mounting it directly behind the panel, the cost is $500. If the charger isn’t going directly behind the panel, we’ll need to measure the distance to give you an accurate quote — just call or text and I’ll walk you through it. Information is free.

If you send me the square footage of your home and a photo of your panel open — so I can see the breaker sizes and panel labels — I can figure that out for you!

Thinking About Powerwall?

Give Kelvin a call for straight answers from a Tesla-certified master electrician. No pressure — whether it’s Powerwall 3, expansion units or a Wall Connector.

(404) 516-6888

Serving the entire Phoenix Valley — information is always free